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Post by steveuk on Oct 3, 2009 6:53:37 GMT -5
hi new to the board,
does anyone know of an easy way of freeing the apex seals, the engine was seized when i got the bike, engine is free now and turns over freely by hand but two of the apex seals are stuck in. so is there an easy way of freeing them without stripping the motor.
Steve
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Post by tom93gts on Oct 3, 2009 10:04:19 GMT -5
You can try putting some oil in through the spark plug hole and letting it soak, if you are more adventurous then can try atf. Atf is more effective at attacking carbon but is also harder on the rubber seals. Maybe something like seafoam would be safer...
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Post by steveuk on Oct 3, 2009 11:12:09 GMT -5
hi
i have been using wd40, positioning one of the apex seals to the bottom of the housing and then filling the bottom of the housing with wd40 penetrating oil but still no movement, even tried tapping them with a small block of wood.
steve
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shep
1st Gear
Posts: 93
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Post by shep on Oct 3, 2009 12:15:57 GMT -5
In the rotary car world we use ATF. Let it soak in there and just keep turning it over by hand. It may take a few applications, but it should free it up. Then you'll have a nice smoke show when it starts.
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Post by Jess on Oct 3, 2009 13:22:03 GMT -5
ATF is absolutely the last resort... It attacks the o rings and ruins them.
WD 40 is not really a very good lubricant. It stands for water displacement formula 40. While it has thousands of uses, I do not think that it will work well.
You seem to be following the appropriate procedure, I would just use a penetrating oil such as PB Blaster (not that I am specifcally recommending that brand). I use it and have had good results.
Best of luck, keep us posted as to your progress. Take your time and be patient.
Best,
Jess
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Post by steveuk on Oct 3, 2009 14:24:06 GMT -5
I am in the UK and can not get PB blaster, I can find some penatrating oil with graphite in it, would the graphite damage the rubber o rings.
steve
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Post by Jess on Oct 3, 2009 18:11:32 GMT -5
Graphite should not hurt anything...
Any decent penetrating oil should be fine... Do they sell Kroll in the UK?
I have used pure oil of wintergreen as well when I can get it... Most penetrating oils have some in them.
The two points were...
1. Only use ATF as a very last result. If you know the motor will have to be torn down, you might try ATF as it cant hurt, if you are doing a teardown anyway.
2. WD 40 is not a good penetrating oil. It will actually gum things up.
Best of luck... with patience and a little luck she'll be apples.
Jess
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Post by Crusader on Oct 4, 2009 3:35:03 GMT -5
Does rotary recycle sell a rebuild kit for the RE-5 motor? as in apex seals, oil seals etc? Or are parts very rare? www.hurleyrotary.com have engine rebuild kits for the NSU ro80 rotary engine (is this the same motor or interchangable as the RE-5?)
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Post by Jess on Oct 4, 2009 11:36:15 GMT -5
We sell used and rebuilt motors. Up until 2 years ago we still had NOS, but they are gone now.
Sorry, we do not sell rebuild kits.
Best,
Jess
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Post by Crusader on Oct 9, 2009 2:05:32 GMT -5
Hey Jess,
Do you know if the NSU ro80 wankel engine has any interchangable items with the RE-5 unit?
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Post by Jess on Oct 9, 2009 12:28:56 GMT -5
I wish I had the answer to that question... Not very many Ro80's made it to my side of the pond. I have never seen one up close and personal. Now if someone has an Ro80 that they want to drop off for me , I'll take a look and let you know... Best, Jess
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Post by stappy on Nov 2, 2009 16:28:36 GMT -5
I heard a rumor many years ago (back when you could still buy engines from Suzuki) that certain Mazda seals would work if you cut them down. Now since my dads bike ran then I did not look further but always kept it in the back of my mind. Now I have a seized up RE and am betting I will need to find out. Any one look into it? I thought these things were super simple inside, why the big secret as to how to rebuild one?
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Post by Jess on Nov 2, 2009 19:00:03 GMT -5
No secret... I sell an engine manual That discusses stripdown and reassembly. Be happy to sell you one.
It takes very specialized specific tools that are not made. You can make them if you have a lathe/mill machine shop. That is how mine came to be...
Also, you will need to be able to machine down seals from other applications as well as source all the orings, bearings ect, as there are no "rebuild kits" per se, available.
I will sell you a rebuilt or used motor. I have some rebuilts available. Until the supply of used good motors becomes short... it is not economically feasable to rebuild them.
If I can offer any advice, I'll be happy to.
Best,
Jess
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Post by shavron on Nov 2, 2009 20:39:10 GMT -5
I got this From: re5-request@micapeak.com
MR allison wrote:
When I restored my re5 4 years ago It had stood for 10 years and when I came to start it for the first time I found there was no compression at all you could spin it with one finger. I contacted sam and he told me to remove the exhaust and manifold and rotate the engine until each tip came into the centre of the outlet and spray it with wd 40 or penitrating fluid and once it had soaked in gently tap across the face of the tip with a nylon drift and if they are stuck you will see them spring out.after I had done this it was impossible to kick the engine over and its been fine ever since. Just be careful not to damage the tips. >
Hope this helps
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Post by Jess on Nov 2, 2009 21:37:14 GMT -5
Good advice Ron.
With patience and perseverance, they can usually be unstuck and gotten back to running...
Best,
Jess
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